New: massive e-learning platform Udemy gave teachers a window to 'opt-out' of their material being used to train AI. That window is already over. We spoke to instructors who had no idea they had automatically been opted-in. See here, it's greyed out https://www.404media.co/massive-e-learning-platform-udemy-gave-teachers-a-gen-ai-opt-out-window-its-already-over/